{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:16.216725", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2024-Apr-05_to_2024-Apr-09_243.0_42.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2024040000157}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "April 05 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 95110.07207554372}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 42.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 243.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "243.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 244.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-116.82, 38.68], [-116.47, 38.53], [-116.25, 38.0], [-116.47, 37.47], [-117.0, 37.25], [-117.53, 37.47], [-117.68, 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[-116.96, 39.0], [-116.91, 38.89], [-116.82, 38.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.53, 41.53], [-120.0, 41.75], [-119.75, 41.65], [-119.68, 41.68], [-119.53, 42.03], [-119.18, 42.18], [-119.03, 42.53], [-118.68, 42.68], [-118.53, 43.03], [-118.0, 43.25], [-117.75, 43.15], [-117.68, 43.18], [-117.53, 43.53], [-117.0, 43.75], [-116.75, 43.65], [-116.68, 43.68], [-116.53, 44.03], [-116.0, 44.25], [-115.47, 44.03], [-115.32, 43.68], [-114.97, 43.53], [-114.75, 43.0], [-114.97, 42.47], [-115.32, 42.32], [-115.47, 41.97], [-115.82, 41.82], [-115.96000000000001, 41.5], [-115.75, 41.0], [-115.97, 40.47], [-116.32, 40.32], [-116.47, 39.97], [-116.82, 39.82], [-116.85, 39.75], [-116.75, 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-1.588505767207003, -1.6714049806883784, -1.4316282981087225]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0887383318325226, -2.3804438401233057, -2.091724136346761, -2.2606734238357715, -1.4316282981087225]}}